The “CNN Tonight” host was at a temporary loss for words Friday night when fellow anchor Chris Cuomo asked him to explain why the costumes had “crossed the line.”

“I don’t know what to say. It’s a sign of the times,” said Lemon, who claimed the outfits worn by the Middleton School District educators were “overtly” and “blatantly” political.

Another day, another racist costume. This is from Middletown School District in Idaho. Please call (208) 585-3027 to say1) racism is unacceptable2) they are creating and promoting a hostile learning environment to children3) what is their plan to make it right? pic.twitter.com/DqUwvP3ROL

The district’s superintendent has since apologized for the “clearly insensitive and inappropriate” stunt. But Lemon asked, “What is the wall meant to do? Meant to keep out a certain group of people from coming into the country.”